1/*
2 * Copyright (c) 2013, Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "platform/graphics/skia/GaneshUtils.h"
33
34#include "third_party/skia/include/core/SkCanvas.h"
35#include "third_party/skia/include/gpu/SkGrPixelRef.h"
36
37namespace WebCore {
38
39bool ensureTextureBackedSkBitmap(GrContext* gr, SkBitmap& bitmap, const IntSize& size, GrSurfaceOrigin origin, GrPixelConfig config)
40{
41    if (!bitmap.getTexture() || bitmap.width() != size.width() || bitmap.height() != size.height()) {
42        if (!gr)
43            return false;
44        GrTextureDesc desc;
45        desc.fConfig = config;
46        desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
47        desc.fSampleCnt = 0;
48        desc.fOrigin = origin;
49        desc.fWidth = size.width();
50        desc.fHeight = size.height();
51        SkAutoTUnref<GrTexture> texture(gr->createUncachedTexture(desc, 0, 0));
52        if (!texture.get())
53            return false;
54
55        SkImageInfo info;
56        info.fWidth = desc.fWidth;
57        info.fHeight = desc.fHeight;
58        info.fColorType = kPMColor_SkColorType;
59        info.fAlphaType = kPremul_SkAlphaType;
60
61        SkGrPixelRef* pixelRef = SkNEW_ARGS(SkGrPixelRef, (info, texture.get()));
62        if (!pixelRef)
63            return false;
64        bitmap.setInfo(info);
65        bitmap.setPixelRef(pixelRef)->unref();
66    }
67
68    return true;
69}
70
71} // namespace WebCore
72